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Allow NULL LoopPassManager argument in UnrollLoop. PR12734.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156358 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick
2012-05-08 02:52:09 +00:00
parent 92ff7cae7c
commit b78d83d837
2 changed files with 24 additions and 18 deletions
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2
lib/Transforms/Utils/LoopUnrollRuntime.cpp
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@@ -237,6 +237,8 @@ bool llvm::UnrollRuntimeLoopProlog(Loop *L, unsigned Count, LoopInfo *LI,
// Use Scalar Evolution to compute the trip count. This allows more
// loops to be unrolled than relying on induction var simplification
if (!LPM)
return false;
ScalarEvolution *SE = LPM->getAnalysisIfAvailable<ScalarEvolution>();
if (SE == 0)
return false;